body{
	margin: 0;
	padding: 0;
}
#topbar {
	width: 100%;
	height: 50px;
	float: left;
	margin-bottom: 5px;
	border: 1px solid red;
}
#content {
	width: 100%;
	height: 50px;
	float: left;
	margin-bottom: 5px;
	border: 1px solid orange;
}
#bootom{
	width: 100%;
	height: 50px;
	float: left;
	margin-bottom: 5px;
	border: 1px solid blue;
}